the money in boxing is ridiculous, and i wont be surprised if mayweather does make $70 million because don't forget he is his own promoter aswell. all the trash talk and the flashy lifestyle is what makes him a marketing genius. love him or hate him people want to watch him
Floyd Mayweather boasts he will make $70 million for 36 minutes of work | For The Win
the picture in the link breaks down his pay (its insane)